The former butchering facility in Dresden, Germany featured in Kurt Vonnegut's 1969 book Slaughterhouse Five is a real place that you can visit. The book is a work of fiction, but Vonnegut was really held prisoner in Dresden's Schlachthof Fünf (Slaughterhouse Five) during the city's fire bombing in World War II. Read more about the underground meat locker that saved the lives of POWs like Vonnegut at Atlas Obscura. Link